Extracts an exponential value of a double-precision floating-point argument.
Double-precision floating-point value.
_logb returns the unbiased exponential value of x.
The _logb function extracts the exponential value of its double-precision floating-point argument x, as though x were represented with infinite range. If the argument x is denormalized, it is treated as if it were normalized.
For more compatibility information, see Compatibility in the Introduction.
All versions of the C run-time libraries.
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.